CN104387788A - Casting materials and casting method for 35kV-grade large-capacity dry main transformer coil - Google Patents
Casting materials and casting method for 35kV-grade large-capacity dry main transformer coil Download PDFInfo
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- CN104387788A CN104387788A CN201410499387.XA CN201410499387A CN104387788A CN 104387788 A CN104387788 A CN 104387788A CN 201410499387 A CN201410499387 A CN 201410499387A CN 104387788 A CN104387788 A CN 104387788A
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Abstract
The present invention discloses casting materials and a casting method for a 35kV-grade large-capacity dry main transformer coil. The casting materials comprise a resin, a curing agent, and silicon micro-powder, wherein a weight part ratio of the resin to the silicon micro-powder is 45-55:90-110, and a weight part ratio of the resin to the curing agent is 1:1. The method comprises: pre-mixing the resin and the silicon micro-powder, and pre-mixing the curing agent and the silicon micro-powder, wherein the weights of the resin and the curing agent are the same; mixing the resin-silicon micro-powder mixture and the curing agent-silicon micro-powder mixture, stirring, and degassing; and finally pouring the stirred and degassed mixture into a mold to achieve the dry main transformer coil casting. According to the present invention, the casting of the 35kV-grade large-capacity dry main transformer coil can be achieved, the coil formed by using the materials and the casting method has the high strength and does not crack; and the glass fibers are not adopted, such that the damage of the glass fibers on human body is effectively avoided.
Description
Technical field
The present invention relates to a kind of dry type main transformer cast batching and method thereof, specifically a kind of 35kV level Large Copacity dry type main transformer coil cast batching and method thereof, belong to Large Copacity dry type main transformer cast batching and method and technology field thereof.
Background technology
At present, for small-capacity dry-type main transformer coils such as 5kv or 10kv levels, the batching that producer generally adopts resin, solidifying agent adds silicon powder, first resin and solidifying agent are added reaction flask according to certain ratio, after being stirred to certain temperature, then add silicon powder to the inside, after stirring, it is reduced pressure, and being retained to still, contact vacuum gets final product discharging; Finally discharging is poured into the cast that mould realizes dry type main transformer coil again.But because the size of 35kV level Large Copacity dry type main transformer coil and required batching are than the size of the small-capacity dry-type main transformer coils such as 5kv or 10kv level and large many or many many of required batching, when pouring into a mould 35kV level Large Copacity dry type main transformer coil as used above-mentioned batching and technique, can because the reactivity of resin and solidifying agent is too fast in casting process premature solidification, the cast of whole coil can not be realized.
Now for 35kV level Large Copacity dry type main transformer coil, a lot of producer all adopts virgin resin to add the batching of glass fibre, through stirring after carry out again pouring into a mould obtained coil, although this batching and method simple to operation, there is following drawback:
1, cast is not thorough, easily produces bubble, makes the coil after casting easy to crack;
2, in stirring and casting process, glass fibre easily wafts with the wind, and enters tracheae and lung along with breathing, affects the healthy of workman.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of 35kV level Large Copacity dry type main transformer coil cast batching and method thereof, the coil strength after casting is high, does not ftracture; Glass fibre can be avoided the injury of human body.
To achieve these goals, this 35kV level Large Copacity dry type main transformer cast batching comprises resin, solidifying agent and silicon powder, and described resin and silicon powder by weight proportioning are 45-55:90-110, and described resin and solidifying agent by weight proportioning are 1:1.
Preferably, above-mentioned cast batching comprises the component of following parts by weight:
By a pouring procedure for above-mentioned batching cast 35kV level Large Copacity dry type main transformer coil, the concrete steps of this pouring procedure are as follows:
First, pre-mixing is carried out to resin, solidifying agent and silicon powder: choose the resin of 45-55 parts by weight and the silicon powder of 45-55 parts by weight, both are mixed and carries out the formation resin silicon powder mixture that stirs; , choose and the selected solidifying agent of weight resin number identical weight number and the silicon powder of 45-55 parts by weight meanwhile, both are mixed and carries out the formation solidifying agent silicon powder mixture that stirs; Secondly, by resin silicon powder mixture and the mixing of solidifying agent silicon powder mixture, and stir, carry out degassed simultaneously; Finally, by stir degassed after mixture pour into mould realize dry type main transformer coil cast.
Preferably, during described pre-mixing, choose the resin of 50 parts by weight and the silicon powder of 50 parts by weight, both are mixed and carries out stirring formation resin silicon powder mixture; Meanwhile, choose the solidifying agent of 50 parts by weight and the silicon powder of 50 parts by weight, both are mixed and carries out stirring formation solidifying agent silicon powder mixture.
Compared with prior art, the present invention is by change Large Copacity dry type main transformer coil cast batching, adopt the batching mode of solidifying agent, silicon powder and resin, first by etc. the solidifying agent of weight, resin mix to silicon powder respectively evenly, again two mixtures are carried out mix and blend and degassed, and mixed mixture is injected the cast that mould realizes Large Copacity dry type main transformer coil.Secondary mixing is carried out again after first carrying out pre-mixing, the reactivity of solidifying agent and resin can be reduced, extend the reaction times of solidifying agent and resin, thus the duration of pouring of mixture can be extended, be convenient to the cast of 35kv Large Copacity dry type main transformer coil, use simultaneously this batching and pouring procedure shaping after coil strength high, can not ftracture; In addition, because no longer adopting glass fibre, therefore effectively prevent the injury of glass fibre to human body.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
The present invention's a kind of 35kV level Large Copacity dry type main transformer coil cast batching comprises resin, solidifying agent and silicon powder, and described resin and silicon powder by weight proportioning are 45-55:90-110, and described resin and solidifying agent by weight proportioning are 1:1.
A kind of pouring procedure by above-mentioned batching cast 35kV level Large Copacity dry type main transformer coil, the concrete steps of this pouring procedure are as follows: first, pre-mixing is carried out to resin, solidifying agent and silicon powder: choose the resin of 45-55 parts by weight and the silicon powder of 45-55 parts by weight, both are mixed and carries out the formation resin silicon powder mixture that stirs; Meanwhile, choose the silicon powder of solidifying agent with weight resin number identical weight number and 45-55 parts by weight, both are mixed and carries out stirring and form solidifying agent silicon powder mixture; Secondly, by resin silicon powder mixture and the mixing of solidifying agent silicon powder mixture, and stir, carry out degassed simultaneously; Finally, by stir degassed after mixture pour into mould realize dry type main transformer coil cast.
During use, first by waiting the resin of parts by weight, solidifying agent mixes to silicon powder evenly respectively, then pour solidifying agent silicon powder mixture into resin silicon powder mixture and stir, and carry out degassed; Finally pour into a mould again; Resin can be reduced by silicon powder with the mixing of resin, solidifying agent to contact with solidifying agent, reduce the reactivity of resin and solidifying agent, the reaction times of both prolongations, and then extend the duration of pouring of mixture, be convenient to the cast realizing the many 35kv Large Copacity dry type main transformer coils of large to size, required batching, avoid it fully react too early in casting process and the situation of coil cast cannot be completed.Meanwhile, the coil strength after shaping according to above-mentioned proportioning machine pouring procedure is high, can not ftracture; Because no longer adopting glass fibre, therefore effectively prevent the injury of glass fibre to human body.
Embodiment 1
Formula and the pouring procedure of the 35kV level Large Copacity dry type main transformer cast batching employing that the present embodiment provides are as follows:
The resin of 45 parts is chosen, the solidifying agent of 45 parts, the silicon powder of 90-110 part according to parts by weight proportioning; First, the silicon powder of the resin of 45 parts and 45-55 part is mixed and is stirred to evenly; Simultaneously by 45 parts solidifying agent mix with the silicon powder of remaining 45-55 part, be stirred to evenly; Again by above-mentioned resin silicon powder mixture and the mixing of solidifying agent silicon powder mixture, carry out degassed while carrying out stirring, stir degasification process and be about 30 minutes; Finally, then by the mixture after degassed for stirring the coil cast that mould can realize dry type main transformer is poured into.
Embodiment 2
Formula and the pouring procedure of the 35kV level Large Copacity dry type main transformer cast batching employing that the present embodiment provides are as follows:
The resin of 55 parts is chosen, the solidifying agent of 55 parts, the silicon powder of 90 parts according to parts by weight proportioning; First, the silicon powder of the resin of 55 parts and 45 parts is mixed and stirs; Simultaneously by 55 parts solidifying agent mix with the silicon powder of remaining 45 parts, stir; Again by above-mentioned resin silicon powder mixture and the mixing of solidifying agent silicon powder mixture, carry out degassed while carrying out stirring, stir degasification process and be about 30 minutes; Finally, then by the mixture after degassed for stirring the coil cast that mould can realize dry type main transformer is poured into.
Embodiment 3
Formula and the pouring procedure of the 35kV level Large Copacity dry type main transformer cast batching employing that the present embodiment provides are as follows:
The resin of 50 parts is chosen, the solidifying agent of 50 parts, the silicon powder of 100 parts according to parts by weight proportioning; First, the silicon powder of the resin of 50 parts and 50 parts is mixed and stirs; Simultaneously by 50 parts solidifying agent mix with the silicon powder of remaining 50 parts, stir; Again by above-mentioned resin silicon powder mixture and the mixing of solidifying agent silicon powder mixture, carry out degassed while carrying out stirring, stir degasification process and be about 30 minutes; Finally, then by the mixture after degassed for stirring the coil cast that mould can realize dry type main transformer is poured into.
In above-mentioned three kinds of embodiments, the set(ting)value of Resin Degassing vacuum tightness is not higher than 133Pa, and the vacuum tightness after input solidifying agent is not higher than 667Pa; Above-mentioned three kinds of embodiments all can realize the cast of 35kV level Large Copacity dry type main transformer coil, find through experiment, and the coil strength that embodiment 3 obtains is best.
Claims (4)
1. a 35kV level Large Copacity dry type main transformer coil cast batching, it is characterized in that, described cast batching comprises resin, solidifying agent and silicon powder, and described resin and silicon powder by weight proportioning are 45-55:90-110, and described resin and solidifying agent by weight proportioning are 1:1.
2. a kind of 35kV level Large Copacity dry type main transformer coil cast batching according to claim 1, it is characterized in that, described cast batching comprises the component of following parts by weight:
3. a pouring procedure for 35kV level Large Copacity dry type main transformer coil as claimed in claim 1, it is characterized in that, the step of pouring procedure is as follows:
First, pre-mixing is carried out to resin, solidifying agent and silicon powder: choose the resin of 45-55 parts by weight and the silicon powder of 45-55 parts by weight, both are mixed and carries out the formation resin silicon powder mixture that stirs; Meanwhile, choose the silicon powder of solidifying agent with weight resin number identical weight number and 45-55 parts by weight, both are mixed and carries out stirring and form solidifying agent silicon powder mixture;
Secondly, by resin silicon powder mixture and the mixing of solidifying agent silicon powder mixture, and stir, carry out degassed simultaneously;
Finally, by stir degassed after mixture pour into mould realize dry type main transformer coil cast.
4. the pouring procedure of a kind of 35kV level Large Copacity dry type main transformer coil according to claim 3, it is characterized in that, during described pre-mixing, choose the resin of 50 parts by weight and the silicon powder of 50 parts by weight, both are mixed and carries out stirring formation resin silicon powder mixture; Meanwhile, choose the solidifying agent of 50 parts by weight and the silicon powder of 50 parts by weight, both are mixed and carries out stirring formation solidifying agent silicon powder mixture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410499387.XA CN104387788A (en) | 2014-09-25 | 2014-09-25 | Casting materials and casting method for 35kV-grade large-capacity dry main transformer coil |
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| CN201410499387.XA CN104387788A (en) | 2014-09-25 | 2014-09-25 | Casting materials and casting method for 35kV-grade large-capacity dry main transformer coil |
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| CN104387788A true CN104387788A (en) | 2015-03-04 |
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| CN201410499387.XA Pending CN104387788A (en) | 2014-09-25 | 2014-09-25 | Casting materials and casting method for 35kV-grade large-capacity dry main transformer coil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999608A (en) * | 2015-08-21 | 2015-10-28 | 四川电器集团股份有限公司 | Vacuum pouring method for current transformer |
| CN107614230A (en) * | 2015-06-15 | 2018-01-19 | 三井化学株式会社 | The manufacture method of plastic lens and the manufacture device of plastic lens |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4427740A (en) * | 1982-04-09 | 1984-01-24 | Westinghouse Electric Corp. | High maximum service temperature low cure temperature non-linear electrical grading coatings resistant to V.P.I. resins containing highly reactive components |
| CN101847508A (en) * | 2010-04-15 | 2010-09-29 | 上海凯利电器厂有限公司 | Vacuum casting method for epoxy resin |
| CN102181128A (en) * | 2011-03-30 | 2011-09-14 | 吴江固德电材系统有限公司 | Epoxy resin premix and preparation technology of the epoxy resin premix |
| CN102515626A (en) * | 2012-01-06 | 2012-06-27 | 桂林理工大学 | High heat-conductivity epoxy casting material for dry power transformer and preparation method thereof |
-
2014
- 2014-09-25 CN CN201410499387.XA patent/CN104387788A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4427740A (en) * | 1982-04-09 | 1984-01-24 | Westinghouse Electric Corp. | High maximum service temperature low cure temperature non-linear electrical grading coatings resistant to V.P.I. resins containing highly reactive components |
| CN101847508A (en) * | 2010-04-15 | 2010-09-29 | 上海凯利电器厂有限公司 | Vacuum casting method for epoxy resin |
| CN102181128A (en) * | 2011-03-30 | 2011-09-14 | 吴江固德电材系统有限公司 | Epoxy resin premix and preparation technology of the epoxy resin premix |
| CN102515626A (en) * | 2012-01-06 | 2012-06-27 | 桂林理工大学 | High heat-conductivity epoxy casting material for dry power transformer and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107614230A (en) * | 2015-06-15 | 2018-01-19 | 三井化学株式会社 | The manufacture method of plastic lens and the manufacture device of plastic lens |
| CN107614230B (en) * | 2015-06-15 | 2020-01-14 | 三井化学株式会社 | Method and apparatus for manufacturing plastic lens |
| US11358354B2 (en) | 2015-06-15 | 2022-06-14 | Mitsui Chemicals, Inc. | Process for producing plastic lens and apparatus for producing plastic lens |
| CN104999608A (en) * | 2015-08-21 | 2015-10-28 | 四川电器集团股份有限公司 | Vacuum pouring method for current transformer |
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Application publication date: 20150304 |